Detcon TP-524D-HRT - Manual (Page 28)

Model TP-524D-HRT
TP-524D-HRT Instruction Manual Rev. 0.3 Page 24 of 48
Input Voltage Fault
If the detector is currently receiving an input voltage that is outside of the 11.5-28VDC range, an “Input
Voltage Fault” is declared. An “Input Voltage Fault” will cause the “Fault Detected” message to scroll once a
minute on the sensor display. If an Input Voltage Fault occurs, the 4-20mA signal will be set at 0mA until the
fault condition is resolved.
Temperature Fault
If the detector is reporting currently an ambient temperature that is outside of the –40ºC to +75ºC range, a
“Temperature Fault” is declared. A “Temperature Fault” will cause the “Fault Detected” message to scroll
once a minute on the sensor display. If a Temperature Fault occurs, the 4-20mA signal remains operational.
AutoSpan Fault
If 180 days has elapsed since the last successful AutoSpan, an AutoSpan Fault will be generated. An
“AutoSpan Fault” will cause the “Fault Detected” message to scroll once a minute on the sensor display. If an
AutoSpan Reminder Fault occurs, the 4-20mA signal remains operational.